Wind power plants have emerged as a cornerstone in the global effort to transition toward renewable energy sources, offering a clean and sustainable solution for electricity generation. This review paper provides a comprehensive analysis of technological advancements, efficiency optimization strategies, and challenges faced by the wind energy sector. Modern wind turbines have evolved significantly, with innovations such as larger rotor diameters (up to 220 meters) and increased tower heights (reaching 160 meters) that enhance energy capture. These design improvements have boosted turbine capacity, with new models achieving power outputs of up to 15 MW per turbine, compared to 2-3 MW for earlier designs, leading to a 30-40% increase in efficiency. Offshore wind farms, benefiting from consistent and stronger winds, demonstrate higher capacity factors, averaging around 45-60%, compared to 30-35% for onshore farms. The introduction of floating wind turbines has expanded offshore installations into deeper waters, where winds are more reliable, further increasing the overall efficiency of wind energy systems. Advanced materials such as carbon fiber composites have reduced turbine weight, enhancing both durability and performance. Moreover, integrating AI and smart technologies has led to a 20-25% reduction in maintenance costs through predictive maintenance and optimization algorithms that adjust blade angles and turbine orientation in real-time. Despite these advancements, challenges persist. Wind intermittency and variability remain critical issues, with capacity utilization rates often below 50%. Engineers address this challenge through energy storage solutions, including battery systems, which have shown up to 80% efficiency in managing supply-demand fluctuations.